Regardless of what form symptoms take (SKIN RASH, tingling around the MOUTH, DIARRHEA), a type I hypersensitivity reaction is a systemic response-it affects and involves the body as a whole.
How to Read Your Eyeglass Prescription. The first step to understanding your eyeglass prescription is knowing what OD and OS mean. They are abbreviations for oculus dexter and oculus sinister, which are Latin terms for right eye and left eye.
1 N.V. is used if you have glasses only for reading, or if you have bifocals, N.V. indicates the lower portion of your bifocal lens. 2  O.D. stands for oculus dexter, Latin for âright eye.â (Your prescription may just say ârightâ or even RE. 3  O.S. stands for oculus sinister, which is âleft eyeâ in Latin.